Kingshuk Mondal / CC BY 4.0
Port St. Lucie, FL Weather on August 12
August 12th in Port St. Lucie, FL typically brings hot summer weather, with average highs around 91°F and lows near 76°F. Over 55 years of records, the warmest August 12th was in 1983 (88°F average), while the coldest was 1994 (78°F) — a 10°F range across recorded history. Rain or other precipitation has occurred on about 58% of August 12th dates historically, with the wettest August 12th recording 1.81" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
What to Expect on August 12
Planning for August 12th in Port St. Lucie, FL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
August 12 Weather Records for Port St. Lucie
- •The all-time record high for August 12th in Port St. Lucie, FL is 97°F, set in 1987.
- •The coldest August 12th on record dropped to 70°F in 2002.
- •Temperatures have reached 90°F or higher on August 12th in 33 of the last 55 years.
Frequently Asked Questions
What was the warmest August 12 ever in Port St. Lucie?
The warmest August 12 in Port St. Lucie, FL reached 97°F in 1987. That is 6°F above the long-term average high of 91°F.
What was the coldest August 12 ever in Port St. Lucie?
The coldest August 12 in Port St. Lucie, FL dropped to 70°F in 2002. That is 6°F below the long-term average low of 76°F.
What is the average temperature on August 12 in Port St. Lucie?
On August 12, Port St. Lucie averages a high of 91°F and a low of 76°F based on 55 years of NOAA weather observations from NETTLES IS.
How many years of weather data are available for August 12 in Port St. Lucie?
We have 55 years of weather records for August 12 in Port St. Lucie, FL, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
August 12 Weather History in Port St. Lucie
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 90°F | 78°F | 0" | -- |
| 2024 | 95°F | 78°F | 0.02" | -- |
| 2023 | -- | 79°F | 0" | -- |
| 2022 | 88°F | 79°F | 0.07" | -- |
| 2021 | 89°F | 82°F | 0.04" | -- |
| 2020 | 89°F | 79°F | 0" | -- |
| 2019 | 94°F | 76°F | 0.5" | -- |
| 2018 | 87°F | 74°F | 0.06" | -- |
| 2017 | 93°F | 75°F | 0.36" | -- |
| 2016 | 89°F | 77°F | 0.01" | -- |
| 2015 | 94°F | 75°F | 0" | -- |
| 2014 | 95°F | 81°F | 0" | -- |
| 2013 | 86°F | 79°F | 0" | -- |
| 2012 | 84°F | 77°F | 0.75" | -- |
| 2011 | 90°F | 77°F | 0" | -- |
| 2010 | 92°F | 75°F | 0.01" | -- |
| 2009 | 91°F | 76°F | 0" | -- |
| 2008 | 88°F | 73°F | 0.75" | -- |
| 2007 | 95°F | 77°F | 0.01" | -- |
| 2006 | 94°F | 79°F | 0" | -- |
| 2005 | 90°F | 74°F | 0" | -- |
| 2004 | 85°F | 80°F | 0.15" | -- |
| 2003 | 89°F | 73°F | 0.63" | -- |
| 2002 | 89°F | 70°F | 0.96" | -- |
| 2001 | 90°F | 74°F | 0" | -- |
| 2000 | 94°F | 74°F | 0" | -- |
| 1999 | 90°F | 76°F | 1.31" | -- |
| 1998 | 92°F | 79°F | 0" | -- |
| 1997 | 92°F | 73°F | 0" | -- |
| 1996 | 95°F | 77°F | 0" | -- |
| 1995 | 92°F | 75°F | 0.1" | -- |
| 1994 | 85°F | 72°F | 1.81" | -- |
| 1993 | 91°F | 75°F | 0" | -- |
| 1992 | 89°F | 74°F | 0.1" | -- |
| 1991 | 93°F | 78°F | 0.05" | -- |
| 1990 | 88°F | 71°F | 0.58" | -- |
| 1989 | 90°F | 73°F | 0" | -- |
| 1988 | 86°F | 75°F | 0.55" | -- |
| 1987 | 97°F | 73°F | 0" | -- |
| 1986 | 86°F | 73°F | 0.24" | -- |
| 1985 | 92°F | 75°F | 0.42" | -- |
| 1984 | 91°F | 78°F | 0" | -- |
| 1983 | 95°F | 80°F | 0.02" | -- |
| 1982 | 90°F | 73°F | 0.11" | -- |
| 1981 | 89°F | 80°F | 0.19" | -- |
| 1980 | 91°F | 76°F | 0.33" | -- |
| 1979 | 92°F | 75°F | 0.01" | -- |
| 1978 | 90°F | 74°F | 0.19" | -- |
| 1977 | 89°F | 72°F | 0.52" | -- |
| 1976 | 89°F | 76°F | 0.2" | -- |
| 1975 | 94°F | 73°F | 0" | -- |
| 1974 | 86°F | 71°F | 0.07" | -- |
| 1973 | 88°F | 80°F | 0" | -- |
| 1972 | 93°F | 74°F | 0" | -- |
| 1971 | 92°F | -- | 0" | -- |
Based on 55 years of data from NOAA station: NETTLES IS
Monthly Climate Averages
Historical temperature and precipitation averages for Port St. Lucie, FL, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.